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-- autorouting for pneumatic tubes
local function is_tube(nodename)
return table.contains(pipeworks.tubenodes, nodename)
end
--a function for determining which side of the node we are on
local function nodeside(node, tubedir)
if node.param2 < 0 or node.param2 > 23 then
node.param2 = 0
end
local backdir = minetest.facedir_to_dir(node.param2)
local back = vector.dot(backdir, tubedir)
if back == 1 then
return "back"
elseif back == -1 then
return "front"
end
local topdir = minetest.facedir_to_top_dir(node.param2)
local top = vector.dot(topdir, tubedir)
if top == 1 then
return "top"
elseif top == -1 then
return "bottom"
end
local rightdir = minetest.facedir_to_right_dir(node.param2)
local right = vector.dot(rightdir, tubedir)
if right == 1 then
return "right"
else
return "left"
end
end
local vts = {0, 3, 1, 4, 2, 5}
local tube_table = {[0] = 1, 2, 2, 4, 2, 4, 4, 5, 2, 3, 4, 6, 4, 6, 5, 7, 2, 4, 3, 6, 4, 5, 6, 7, 4, 6, 6, 8, 5, 7, 7, 9, 2, 4, 4, 5, 3, 6, 6, 7, 4, 6, 5, 7, 6, 8, 7, 9, 4, 5, 6, 7, 6, 7, 8, 9, 5, 7, 7, 9, 7, 9, 9, 10}
local tube_table_facedirs = {[0] = 0, 0, 5, 0, 3, 4, 3, 0, 2, 0, 2, 0, 6, 4, 3, 0, 7, 12, 5, 12, 7, 4, 5, 5, 18, 20, 16, 0, 7, 4, 7, 0, 1, 8, 1, 1, 1, 13, 1, 1, 10, 8, 2, 2, 17, 4, 3, 6, 9, 9, 9, 9, 21, 13, 1, 1, 10, 10, 11, 2, 19, 4, 3, 0}
local function tube_autoroute(pos)
local active = {0, 0, 0, 0, 0, 0}
local nctr = minetest.get_node(pos)
if not is_tube(nctr.name) then return end
local adjustments = {
{x = -1, y = 0, z = 0},
{x = 1, y = 0, z = 0},
{x = 0, y = -1, z = 0},
{x = 0, y = 1, z = 0},
{x = 0, y = 0, z = -1},
{x = 0, y = 0, z = 1}
}
-- xm = 1, xp = 2, ym = 3, yp = 4, zm = 5, zp = 6
local positions = {}
local nodes = {}
for i, adj in ipairs(adjustments) do
positions[i] = vector.add(pos, adj)
nodes[i] = minetest.get_node(positions[i])
end
for i, node in ipairs(nodes) do
local idef = minetest.registered_nodes[node.name]
-- handle the tubes themselves
if is_tube(node.name) then
active[i] = 1
-- handle new style connectors
elseif idef and idef.tube and idef.tube.connect_sides then
local dir = adjustments[i]
if idef.tube.connect_sides[nodeside(node, vector.multiply(dir, -1))] then
active[i] = 1
end
end
end
-- all sides checked, now figure which tube to use.
local nodedef = minetest.registered_nodes[nctr.name]
local basename = nodedef.basename
if nodedef.style == "old" then
local nsurround = ""
for i, n in ipairs(active) do
nsurround = nsurround..n
end
nctr.name = basename.."_"..nsurround
elseif nodedef.style == "6d" then
local s = 0
for i, n in ipairs(active) do
if n == 1 then
s = s + 2^vts[i]
end
end
nctr.name = basename.."_"..tube_table[s]
nctr.param2 = tube_table_facedirs[s]
end
minetest.swap_node(pos, nctr)
end
function pipeworks.scan_for_tube_objects(pos)
for side = 0, 6 do
tube_autoroute(vector.add(pos, directions.side_to_dir(side)))
end
end
minetest.register_on_placenode(function(pos, newnode, placer, oldnode, itemstack)
if minetest.registered_items[newnode.name]
and minetest.registered_items[newnode.name].tube
and minetest.registered_items[newnode.name].tube.connect_sides then
pipeworks.scan_for_tube_objects(pos)
end
end)
minetest.register_on_dignode(function(pos, oldnode, digger)
if minetest.registered_items[oldnode.name]
and minetest.registered_items[oldnode.name].tube
and minetest.registered_items[oldnode.name].tube.connect_sides then
pipeworks.scan_for_tube_objects(pos)
end
end)
if minetest.get_modpath("mesecons_mvps") then
mesecon:register_on_mvps_move(function(moved_nodes)
for _, n in ipairs(moved_nodes) do
pipeworks.scan_for_tube_objects(n.pos)
pipeworks.scan_for_tube_objects(n.oldpos)
end
end)
end
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